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Lisa [10]
4 years ago
13

Before there was any life on earth, which gas was absent from earth’s ancient atmosphere?

Biology
2 answers:
Gre4nikov [31]4 years ago
6 0

Oxygen is your answer.

thanks and hope help

Anit [1.1K]4 years ago
5 0
Oxygen was absent from the atmosphere it has only been present for the past 2.7-2.8 billion years but the earth is approximately 4.5 billion years old.
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